Revert some instances of s/iteritems/items/ in be118c3338.

src/utils/gen.py

@@ -219,9 +219,9 @@ class IterableMap(object):
     """Define .items() in a class and subclass this to get the other iters.
     """
     def items(self):
-        if minisix.PY3 and hasattr(self, 'items'):
+        if minisix.PY3 and hasattr(self, 'iteritems'):
             # For old plugins
-            return getattr(self, 'items')() # avoid 2to3
+            return self.iteritems() # avoid 2to3
         else:
             raise NotImplementedError()
     __iter__ = items

src/utils/structures.py

@@ -381,8 +381,8 @@ class MaxLengthQueue(queue):
 class TwoWayDictionary(dict):
     __slots__ = ()
     def __init__(self, seq=(), **kwargs):
-        if hasattr(seq, 'items'):
-            seq = seq.items()
+        if hasattr(seq, 'iteritems'):
+            seq = seq.iteritems()
         elif hasattr(seq, 'items'):
             seq = seq.items()
         for (key, value) in seq: